Wyoming Mold, Pests, Heat & AC Rules
Wyoming rules on mold, pests, heat & ac for renters and landlords, with the statute or official page behind each answer. Last verified: 2026-10-22.
Short answer: No statute — Wyoming's Residential Rental Property Act does not mention mold, and no state housing code addresses it. Mold is governed only by the general duty to keep the unit safe, sanitary and fit for human habitation; W.S. 1-21-1202(a), (c); 1-21-1203(a)-(b); 1-21-1206
The rules in Wyoming
| Mold | No statute — Wyoming's Residential Rental Property Act does not mention mold, and no state housing code addresses it. Mold is governed only by the general duty to keep the unit safe, sanitary and fit for human habitation; the act applies only to conditions that materially affect the physical health or safety of the ordinary renter. The renter must be current on payments and give written notice (certified mail or as allowed by W.S. 1-21-1003) before court remedies are available. Wyoming has no repair-and-deduct or rent-withholding remedy; the renter's remedy is a circuit court action after the notice steps. Duties may be reassigned by an explicit written agreement signed by both parties (W.S. 1-21-1202(d)). |
|---|---|
| Pests & bed bugs | No statute — no pest or bed-bug provision in the Residential Rental Property Act or elsewhere for rentals. Infestations fall under the general safe-and-sanitary duty if they materially affect health or safety. The owner need not remedy conditions caused by the renter, the renter's family or guests through misuse, and the renter must keep the unit clean and dispose of garbage properly. Local codes may impose additional duties. |
| Heat | Yes, but no temperature standard. Each rental unit must have operational heating (and electrical, plumbing and hot and cold running water) unless both parties agree otherwise in writing, and the owner must maintain the heating system. State law sets no minimum indoor temperature or heating season. Seasonal units such as summer cabins not intended to have these amenities are excepted. Because the heating requirement can be waived by a written agreement signed by both parties, check the lease. |
| Air conditioning | No statute — Wyoming law does not require air conditioning or set a maximum indoor temperature. If the rental agreement specifically provides air conditioning, the owner must maintain it as a contracted appliance or facility. Source: W.S. 1-21-1203(a)(iv) |
Related questions
- Does a landlord have to fix mold?
- Who pays for pest control and bed bugs in a rental?
- Does a landlord have to provide heat?
- Does a landlord have to provide air conditioning?
Wyoming vs. neighboring states
| State | Mold | Pests & bed bugs | Heat |
|---|---|---|---|
| Wyoming | No statute — Wyoming's Residential Rental Property Act does not mention mold, and no state housing code addresses it. Mold is governed only by the general duty to keep the unit safe, sanitary and fit for human habitation; the act applies only to conditions that materially affect the physical health or safety of the ordinary renter. The renter must be current on payments and give written notice (certified mail or as allowed by W.S. 1-21-1003) before court remedies are available. W.S. 1-21-1202(a), (c); 1-21-1203(a)-(b); 1-21-1206 | No statute — no pest or bed-bug provision in the Residential Rental Property Act or elsewhere for rentals. Infestations fall under the general safe-and-sanitary duty if they materially affect health or safety. The owner need not remedy conditions caused by the renter, the renter's family or guests through misuse, and the renter must keep the unit clean and dispose of garbage properly. W.S. 1-21-1202; 1-21-1203(c); 1-21-1204(a)(i)-(ii) | Yes, but no temperature standard. Each rental unit must have operational heating (and electrical, plumbing and hot and cold running water) unless both parties agree otherwise in writing, and the owner must maintain the heating system. State law sets no minimum indoor temperature or heating season. Seasonal units such as summer cabins not intended to have these amenities are excepted. W.S. 1-21-1202(a); 1-21-1203(a)(iii) |
| Colorado | Yes. A rental is legally uninhabitable if there is mold associated with dampness, or any other damp condition, that would materially interfere with the tenant's health or safety if not fixed. Minor mold on surfaces that collect moisture through normal use is excluded. The landlord must make sure the unit is habitable before leasing it and must fix such conditions under the warranty of habitability; the tenant may use the remedies in § 38-12-507. C.R.S. §§ 38-12-503, 38-12-505(1)(a), (3) | The landlord must provide appropriate extermination for rodent, vermin, pest or insect infestations throughout the premises. Under the bed-bug law, the tenant must promptly notify the landlord in writing or electronically; within 96 hours the landlord must get the unit inspected by a qualified inspector, and inspect contiguous units if bed bugs are found. The landlord must give written results within two business days and start treatment within five business days. The landlord pays for inspection and treatment, and may not rent a unit it knows or suspects has bed bugs; on request it must disclose bed bugs in the past eight months and the last clean inspection date. C.R.S. § 38-12-505(1)(b)(VII)-(VIII); §§ 38-12-1001 to 38-12-1007 | Yes. A unit that substantially lacks functioning heating facilities that met code when installed and are kept in good working order is uninhabitable. Lack of functioning heating from October through April is presumed to materially interfere with the tenant's life, health or safety. State law sets no minimum indoor temperature. C.R.S. § 38-12-505(1)(b)(V), (4)(d) |
| Idaho | No statute — Idaho has no mold-specific landlord-tenant law and no state agency that regulates mold inspection or removal in rentals. Mold is handled under the tenant's right to sue a landlord who maintains the premises in a manner hazardous to health or safety, fails to provide reasonable waterproofing and weather protection, or fails to maintain plumbing and ventilation facilities. The Attorney General advises tenants to report leaks, excess moisture, or recurring mold to the landlord immediately. Idaho Code § 6-320(a)(1)–(3); Idaho AG, Landlord and Tenant Manual (July 2026), pp. 16–17 | No statute — Idaho law does not specifically assign pest or bed-bug treatment or require a bed-bug disclosure. The Attorney General lists insect infestations as an example of a condition that may violate housing standards and the landlord's duty not to maintain the premises in a manner hazardous to health or safety. Idaho Code § 6-320(a)(3); Idaho AG, Landlord and Tenant Manual (July 2026), pp. 11–12 | No statute sets a minimum temperature or requires landlords to supply heat, but a tenant may sue a landlord who fails to maintain in good working order heating facilities the landlord supplied. The Attorney General lists nonfunctioning heating units as a condition that may violate housing standards. Idaho Code § 6-320(a)(2); Idaho AG, Landlord and Tenant Manual (July 2026), p. 12 |
| Montana | Montana Mold Disclosure Act: a landlord who knows mold is present must disclose it to the tenant before or when the lease is signed, and a landlord who knows the building was tested for mold must say so and give the tenant the test results (if available) and evidence of any later mitigation. A landlord may also give a statutory mold disclosure statement for the tenant to sign; a landlord who gives it, discloses prior testing and mitigation, and discloses known mold is shielded from liability based on the presence of or propensity for mold. No state mold-remediation standard; the general duty to keep the premises fit and habitable applies. Mont. Code Ann. §§ 70-16-701 to 70-16-703; § 70-24-303(1)(b) | No pest- or bed-bug-specific statute. The landlord must make repairs and do whatever is necessary to keep the premises fit and habitable and keep common areas clean and safe; the tenant must keep the unit reasonably clean and safe and dispose of garbage properly. Mont. Code Ann. §§ 70-24-303(1)(b)-(c), 70-24-321(1)(b)-(c) | Yes. The landlord must supply reasonable heat between October 1 and May 1 (plus running water and reasonable hot water at all times) and keep heating facilities in good and safe working order. No statewide minimum temperature is set. Exception: buildings not required by law to be equipped for heat, or units where heat is generated by an installation in the tenant's exclusive control. Mont. Code Ann. § 70-24-303(1)(d), (1)(f) |
| Nebraska | No statute — general habitability/repair duty applies. After written or actual notice, the landlord must substantially comply with applicable minimum housing codes and do whatever is necessary to put and keep the premises fit and habitable. Neb. Rev. Stat. § 76-1419(1)(a)-(b) | No pest- or bed-bug-specific statute. The landlord must keep the premises fit and habitable and common areas clean and safe (after notice); the tenant must keep the occupied part of the premises clean and safe and dispose of garbage and waste properly. Neb. Rev. Stat. §§ 76-1419(1)(b)-(c), 76-1421(2)-(3) | Yes. The landlord must supply reasonable heat (and running water and reasonable hot water at all times) and maintain heating facilities in good and safe working order. No statewide minimum temperature or heating season is set. Exceptions: buildings not required by law to be equipped for heat, or units where heat is generated by an installation in the tenant's exclusive control supplied by a direct public utility connection. Neb. Rev. Stat. § 76-1419(1)(d), (1)(f) |
| South Dakota | No statute — general habitability/repair duty applies. South Dakota has no mold disclosure, remediation or exposure-standard law for rentals; the landlord must keep the premises and common areas in reasonable repair, fit for human habitation and in good and safe working order, except for disrepair caused by the tenant's (or the tenant's invitees') negligent, willful or malicious conduct. SDCL 43-32-8 | No statute — no bed-bug or pest-specific law. The landlord's general duty to keep the premises fit for human habitation applies, except where the condition was caused by the tenant's negligent, willful or malicious conduct. SDCL 43-32-8 | The landlord must maintain heating systems in good and safe working order (unless the tenant caused the disrepair) and keep the unit fit for human habitation. No state statute sets a minimum indoor temperature or heating season. SDCL 43-32-8 |
| Utah | No statute — the Utah Fit Premises Act does not mention mold. Mold is governed by the general duty to keep the unit fit for human habitation and in accordance with local ordinances and local board of health rules, and not to rent premises unless they are safe, sanitary and fit for human occupancy. The act applies only to conditions that materially affect the physical health or safety of the ordinary renter. Utah Code 57-22-3; 57-22-4(1); 57-22-6 | No statute — no pest or bed-bug provision in the Fit Premises Act. Infestations fall under the safe-and-sanitary duty and local health-department rules when they materially affect health or safety. The renter must keep the unit clean and safe, dispose of garbage properly, and comply with local board of health rules. Utah Code 57-22-3; 57-22-4(1); 57-22-5(1) | Yes. Each rental unit must have heating (along with electrical systems, plumbing and hot and cold water), and the owner must maintain the heating system. State law sets no minimum indoor temperature or heating season; local ordinances and board of health rules may. Utah Code 57-22-3(1); 57-22-4(1) |
More Wyoming rental law
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Wyoming Mold, Pests, Heat & AC Rules FAQ
Does a landlord have to fix mold in Wyoming?
No statute — Wyoming's Residential Rental Property Act does not mention mold, and no state housing code addresses it. Mold is governed only by the general duty to keep the unit safe, sanitary and fit for human habitation; the act applies only to conditions that materially affect the physical health or safety of the ordinary renter. The renter must be current on payments and give written notice (certified mail or as allowed by W.S. 1-21-1003) before court remedies are available. (W.S. 1-21-1202(a), (c); 1-21-1203(a)-(b); 1-21-1206)
Who pays for pest control and bed bugs in Wyoming?
No statute — no pest or bed-bug provision in the Residential Rental Property Act or elsewhere for rentals. Infestations fall under the general safe-and-sanitary duty if they materially affect health or safety. The owner need not remedy conditions caused by the renter, the renter's family or guests through misuse, and the renter must keep the unit clean and dispose of garbage properly. (W.S. 1-21-1202; 1-21-1203(c); 1-21-1204(a)(i)-(ii))
Does a landlord have to provide heat in Wyoming?
Yes, but no temperature standard. Each rental unit must have operational heating (and electrical, plumbing and hot and cold running water) unless both parties agree otherwise in writing, and the owner must maintain the heating system. State law sets no minimum indoor temperature or heating season. Seasonal units such as summer cabins not intended to have these amenities are excepted. (W.S. 1-21-1202(a); 1-21-1203(a)(iii))
Does a landlord have to provide air conditioning in Wyoming?
No statute — Wyoming law does not require air conditioning or set a maximum indoor temperature. If the rental agreement specifically provides air conditioning, the owner must maintain it as a contracted appliance or facility. (W.S. 1-21-1203(a)(iv))
General legal information, not legal advice. Laws change and local rules can differ; check the linked official source or talk to a lawyer about your situation.